Should, have said that the 4 - 6 weeks thing will only the start of the operation. I don't even think at this stage this aircraft will have the new interiors. The CAA will want to see some serious testing here before returning the CofA
I am guessing here but my thoughts are that if the CAA etc.. give the OK with the mods, BA will use G-BOAF for crew flight training at Shannon or down in Portugal, while the other 2 aircraft get modifiled and interiors fitted. BA are on record as saying they want 3 aircraft before they start the once a day service. It needs 2 aircraft to run the schedule but they want a back up a/c, so the service will always run as there is too much at stake to p**s off the high paying pax, who may get scared off all over again. Air fracne have said they will restrt their once a day service with just 2 aircraft from thery working fleet of 4 (one rotated through checks and used at the same time for parts.)
If anyone is interested The AF fleet will be F-BVFB, F-BTSD, F-BVFC, F-BVFA. F-BVFF is scheduled to undergo it 12,000 hr major.